package demo2;

public class KeyBoard implements USB{

    @Override
    public void openDevice() {
        System.out.println("插上键盘设备");
    }

    public void flap() {
        System.out.println("疯狂敲击键盘……");
    }

    @Override
    public void closeDevice() {
        System.out.println("关闭键盘设备");
    }
}
